Fig. 4.

A schematic diagram and results from fluorescence in situ hybridization showing the locations of zebra finch BAC clones 5K13 (red) and 55A1 (green) on ZAL2 and ZAL2^m. The two clones hybridize close together on the long arm of ZAL2, but because of an inversion, they map to opposite arms of ZAL2^m (a). Tan-striped (TS) birds have two copies of ZAL2 (b) and white-striped (WS) birds have one copy of ZAL2 and one of ZAL2^m (c). Bird 1128 clearly shows the ZAL2^m hybridization pattern on two chromosomes (d). The chromosome map in (a) shows the locations of the three markers used to genotype Bird 1128 via PCR